Circuit Breakers

Having an effective and well-designed circuit protection system in every building is vital. It not only protects machinery and equipment from costly damage or even worse an electrical fire, but good circuit protection also ensures people are safe too.

Here, at RS we stock an extensive range of high-quality products within our circuit breaker range. They include various types of protection devices as well as consumer units, distribution boards and accessories. Whether you are designing and building a new system or maintaining an old one we have everything you need, providing the perfect end-to-end solution.

What are the different types of circuit breakers?

RCBO Breakers

RCBO stands for Residual Current Circuit Breaker with Over Current protection. Installed in consumer units they protect from short circuits, overload current and residual current as they combine all the functions of an MCB and an RCCB.

RCCB Breakers

RCCB stands for Residual Current Circuit Breaker. They are designed to quickly disconnect any circuit as soon as current leaks to the earthing wire. RCCBs are also effective in protecting from electrocution or shock from direct contact.

MCB Breakers

MCB stands for Miniature Circuit Breaker. They are designed to protect an electric circuit from overcurrent only. They do not safeguard people from electric shock caused by earth leakage.

MCCB Breakers

MCCB stands for Moulded Case Circuit Breaker. They are another type of electrical protection device used in higher current rating applications where an MCB would not suffice. An MCCB protects against overload and short circuit faults. With its high breaking capacity and a wider range of current ratings, MCCBs are typically found in industrial systems rather than domestic systems.

Busbar Feed & Tap-Off Units
Busbar Feed & Tap-Off Units
Busbar Trunking
Busbar Trunking
Busbar Trunking Accessories
Busbar Trunking Accessories
Busbars
Busbars
Circuit Breaker Accessories
Circuit Breaker Accessories
Circuit Trips
Circuit Trips
Consumer Units
Consumer Units
Distribution Boards
Distribution Boards
Electronic Circuit Breakers
Electronic Circuit Breakers
Energy Monitoring Devices
Energy Monitoring Devices
MCBs
MCBs
MCCBs
MCCBs
RCBOs
RCBOs
RCCBs
RCCBs
Surge Protection Devices
Surge Protection Devices
Thermal Breakers
Thermal Breakers

35874 Products showing for Circuit Breakers

232 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 260-8204
  • Mfr. Part No. C63F4
Each
TWD138,806.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 3VA9 Rotary Operator for use with 3VA15/25 1000
  • RS Stock No. 218-1867
  • Mfr. Part No. 3VA9687-0EK11
Each
TWD8,942.00(exc. GST)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 3.2A, Fixed Mount
  • RS Stock No. 236-7375
  • Mfr. Part No. 1SDA067587R1 XT2H 160 TMD 3.2A FF
Each
TWD14,954.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7573
  • Mfr. Part No. 2CDS252001R0255 S202-B25
Each
TWD1,598.00(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-235
  • Mfr. Part No. 3VA6610-6HN46-0AA0
Each
TWD386,976.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 10A Curve C, 250V DC
  • RS Stock No. 772-1509
  • Mfr. Part No. A9N61508
Each
TWD2,478.00(exc. GST)
Temporarily out of stock
Legrand Circuit Breaker - 4 Pole 440V Voltage Rating Screw Mount, 60A Current Rating
  • RS Stock No. 255-2316
  • Mfr. Part No. 401013
Each
TWD26,170.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 250A, Breaking Capacity 800 → 1000 V, Fixed Mount
  • RS Stock No. 205-226
  • Mfr. Part No. C40K32D250
Each
TWD121,565.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 10A Curve K
  • RS Stock No. 231-9728
  • Mfr. Part No. 2CDS272001R0427 S202M K 10A - 15 KA
1 Box of 1
TWD2,500.00(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3, 3+N Phase Distribution Board, 8 Way, 250 A
  • RS Stock No. 336-626
  • Mfr. Part No. SEA9BN8PS
Each
TWD12,709.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Power Pact Mounting Adapter for use with H- and J-Frame Mechanical Lugs
  • RS Stock No. 212-0287
  • Mfr. Part No. S37448
Each
TWD7,430.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-3300
  • Mfr. Part No. 1SDA071208R1
Each
TWD958,654.00(exc. GST)
Temporarily out of stock
ABB Accessories MS/MO165 3 Phase Busbar, 690V ac
  • RS Stock No. 258-9395
  • Mfr. Part No. 1SAM401920R1022
Each
TWD1,243.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)3(-4), NZM3(-4), PN3(-4)
  • RS Stock No. 230-821
  • Mfr. Part No. 118988 NZM3-XHB-DA
Each
TWD17,395.00(exc. GST)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator, Canalis Series
  • RS Stock No. 214-793
  • Mfr. Part No. KSB160SG4
Each
TWD48,500.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 230-045
  • Mfr. Part No. 110843 NZMN3-VE250-AVE
Each
TWD110,384.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8408
  • Mfr. Part No. 8US1250-5AT10
Each
TWD1,224.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3959
  • Mfr. Part No. 1SDA072012R1
Each
TWD2,176,853.00(exc. GST)
In Stock
Schneider Electric RCBO, 20A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-443
  • Mfr. Part No. A9D77420
Each
TWD55,577.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-665
  • Mfr. Part No. 3VA6225-6HN41-0AA0
Each
TWD105,748.00(exc. GST)
1
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